Understanding the code-first, model-first, and database-first approaches to domain design

There are three approaches to developing data-driven applications using Entity Framework. These are:

• Code-first: In this approach, you would create your POCO classes first and then generate the database using these POCO classes

• Model-first: In this approach, you would create your model first using the ADO.NET Entity Data Model Designer and then generate your database from this model

• Database-first: In this approach, you would create your database first and then generate your model using the ADO.NET Entity Data Model Designer from this database

Using the code-first approach

In this approach, you would create your POCO classes first and then generate the database using these classes. Let's create a POCO class as shown:

public class Customer
    {
        public int CustomerID { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
    }

The context class should...